warm recycled polyester shirt. jones outerwear is designed to help you brave the elements while protecting our environment and our resources. jones uses as many recycled, sustainable and eco-friendly materials as possible in each garment. every product in their outerwear is either oeko-tex® or bluesign® certified, and jones also makes sure that the farmers who produce these materials are paid fairly. the december fleece jacket is made from 100 % recycled polyester and is perfect as a mid-layer.the material is oeko-tex® and bluesign® certified, offers you a comfortable 4-way stretch and a breathable material.